AS11171 AUTONATION-FTLD

AUTONATION-FTLD belongs to AutoNation, Inc., the large US automotive retailer headquartered in Fort Lauderdale, Florida — the FTLD in the handle. This is a corporate enterprise AS, not a service provider.

What it's used for

Publishing a retailer's own public-facing systems. RIS sees 4 IPv4 prefixes covering 2,048 addresses (a 208.86.176.0/21 plus three /23 deaggregates carved out of it) and no IPv6, with exactly one observed neighbour. A single neighbour is the clearest possible enterprise signature: the AS exists so the company's own block stays routed and portable, and it carries nobody else's traffic.

Notable

Reverse DNS on the sampled address lands on fortisweb.dealercentral.net — a dealer-facing web system, on a domain AutoNation uses for its dealership operations rather than its consumer brand. That is a useful reminder that a company's routed block often carries its back-office and dealer/partner systems rather than the storefront most people associate with the name, and that the domain in the PTR need not match the brand on the door.

Interesting

Every prefix is registered to AUTONATION-PUB-BLOCK1, so the announcing party and the registrant are the same company, and the deaggregation into /23s inside its own /21 is ordinary traffic-engineering, not evidence of the space being carved up for third parties. The block name itself (PUB) suggests this is the enterprise's public block specifically, distinct from whatever it runs internally.